RT - Journal Article
T1 - Effects of Different Drought and Salinity Levels on Seed Germination of Citrullus colocynthis
JF - mdrsjrns
YR - 2017
JO - mdrsjrns
VO - 5
IS - 3
UR - http://journals.modares.ac.ir/article-24-11809-en.html
SP - 903
EP - 1917
K1 - Citrullus colocynthis
K1 - Drought
K1 - Germination
K1 - Salinity
K1 - Sistan and Baluchestan
AB - Background: Environmental stresses, especially salinity and drought, are effective on seed germination and growth. Materials and Methods: After breaking seed dormancy by simultaneous use of leaching (48 hours) and gibberllic acid (1000 ppm), germination characteristics and seedling growth of Citrullus colocynthis from two ecotypes of Sistan-Baluchestan with six levels of drought (0, -0.3, -0.6, -0.9, -1.2, -1.5 Mpa) and salinity (0, 50, 100, 150, 200, 250 mM) were studied. This experiment was carried out in two different factorial experiments using completely randomized design with four replications. Statistical analysis was performed using version 18 of SPSS software and Factorial analysis of variance (general linear model) and mean comparisons were done using Duncan's multiple range test. Results: The results demonstrated that there were significant differences among different levels of drought and salinity in all measured traits (P<0.01) and a significant decrease in seed germination and seedling growth were observed with increasing levels of drought and salinity (P<0.01). The results revealed that there were significant interactions effect between ecotype and different levels of drought as well as salinity (P<0.01), so seed vigor of Zabol’ ecotype was higher than that of Saravan. Discussion and Conclusions: This species has acceptable germination at -0.6 Mpa droughts and 50 mM salinity. These issues must be considered in its intense planting in Sistan-Baluchestan province and using of Zabol’ ecotype seed is recommended.
LA eng
UL http://journals.modares.ac.ir/article-24-11809-en.html
M3
ER -